NetBSD/sys/arch/amiga/dev/grf/grf_view.h

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/*
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* Copyright (c) 1994 Christian E. Hopps
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
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* This product includes software developed by Christian E. Hopps.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
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* $Id: grf_view.h,v 1.2 1994/01/29 07:00:05 chopps Exp $
*/
#if ! defined (_GRF_VIEW_H)
#define _GRF_VIEW_H
/* removes the view if displaying */
typedef void remove_view_func (view_t *v);
/* free's the memory for this view and removes it if displaying */
typedef void free_view_func (view_t *v);
/* displays this view */
typedef void display_view_func (view_t *v);
/* returns mode of this view */
typedef dmode_t *get_mode_func (view_t *v);
/* fills in color map structure with requested registers */
typedef int get_colormap_func (view_t *v, colormap_t *);
/* sets this views colors according to the color map structure. */
typedef int use_colormap_func (view_t *v, colormap_t *);
struct view {
bmap_t *bitmap; /* bitmap. */
box_t display; /* viewable area. */
void *data; /* view specific data. */
/* functions */
display_view_func *display_view; /* make this view active */
remove_view_func *remove_view; /* remove this view if active */
free_view_func *free_view; /* free this view */
get_mode_func *get_display_mode; /* get the mode this view belongs to */
get_colormap_func *get_colormap; /* get a color map for registers */
use_colormap_func *use_colormap; /* use color map to load registers */
};
view_t * grf_alloc_view (dmode_t *d, dimen_t *dim, u_byte depth);
void grf_display_view (view_t *v);
void grf_remove_view (view_t *v);
void grf_free_view (view_t *v);
dmode_t *grf_get_display_mode (view_t *v);
int grf_get_colormap (view_t *v, colormap_t *cm);
int grf_use_colormap (view_t *v, colormap_t *cm);
#define VDISPLAY_LINE(v, p, l) ((v)->bitmap->plane[p] +\
(((v)->bitmap->bytes_per_row+(v)->bitmap->row_mod)*l))
#endif /* _GRF_VIEW_H */